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20120736 Ver 1_401 Application_20120812
ENGINEERING PLANNING ARCHITECTURE 120 North Boylan Avenue Raleigh NC 27603 1423 919 828 0531 fax 919 834 3589 20120736 August 1 2012 NC DWQ 401 /Wetlands Unit 1650 Mail Service Center Raleigh NC 27699 1650 Re Pre Construction Notification Water Treatment Plant and Water Transmission System Martin County Regional Water and Sewer Authority (MCRWASA) Martin County North Carolina TWC No 3104 G To Whom It May Concern Oh behalf of the MCRWASA we are sending you the following documents for you review and approval for the above referenced project • PCN Form (5 copies) • Application Fee $240 00 • Construction drawings (2 full size copies 3 11 x 17 copies) • Narrative • Wetland Delineation If you should have any questions or need additional information please do not hesitate to contact us Sincerely The% en Company iizrl ` l � Elizabeth M Lorscheider Enclosures As stated C David Bone MCRWASA Chairman AUr, - F � ��12 ADDITIONAL INFORMATION 2 0 1 2 0 7 3 6 A Project Narrative Introduction to Project The applicant Martin County Regional Water and Sewer Authority (MCRWASA) proposes to install a water intake structure and associated infrastructure within the Roanoke River to supply the 2 0 MGD water treatment plant Project Purpose Martin County currently utilizes ground water sources for its public water supplies Martin County is subject to the Central Coastal Plain Capacity Use Area (CCPCUA) rules which require reductions of ground water withdrawals MCRWASA is constructing a surface water treatment plant in order to comply with the CCPCUA rule while continuing to serve its customers with a safe and reliable drinking water source The proposed intake and associated infrastructure will be used to convey surface water from the Roanoke River to the proposed water treatment plant for treatment and distribution Proposed Project The proposed project will provide a new water supply source to MCRWASA who supplies water to the Town of Williamston and Martin County Water and Sewer Districts 1 and 2 The project includes the construction of a 2 0 MGD surface water treatment plant which shall utilize a run of river water intake from the southern bank of Roanoke River The intake shall be designed to protect the integrity of aquatic species and their habitat in the area The surface water intake shall be a 36 inch diameter tee screen anchored by a concrete slab The tee screen will have mesh or slot openings of 10 mm or less The screen has been sized such that the entrance velocities do not exceed 0 25 fps Additionally the screen will have an air backwash system that shall use compressed air to clean the screen These design parameters shall protect the integrity of aquatic species and their habitats in the vicinity of the surface water intake The intake is to be located on property owned by Martin County at Morotoc Park The intake structure shall be constructed in the Roanoke River using a sheet pile coffer dam In addition to the intake structure a fender will be constructed to protect the intake structure from debris and flotsam that may be floating down river The fender shall be constructed of 20 foot piles and 4 x 12 timbers anchored across the piles with a 1 foot spacing Class I rip rap shall be placed around the base of the fender and the intake structure to protect the riverbed against scour Water withdrawn through the intake will flow by gravity through a 20 inch pipe to a pump station located away from the river outside the 100 year floodplam at Morotoc Park in Williamston A 4 inch compressed air line will be installed with the raw water line using straps and saddles This line will supply the air backwash system with compressed air The raw water pump station shall use a vertical turbine pump to pump water southwest along River Drive and shall continue along the alignment to the water treatment plant To protect the pumps and electrical equipment from damage due to flood events the pump station shall be constructed above the 500 year flood elevation (19 feet above mean sea level) The new structure will occupy approximately 2 600 cubic feet of the 500 year floodplain The impact on the available flood capacity and function is expected to be undetectable EXISTING CONDITIONS Submerged Aquatic Vegetation Approximately 1 000 feet of submerged aquatic vegetation will be temporarily displaced in the active construction area but should naturally repopulate after construction is complete Aquatic Resources Gerald Pottern with Robert J Goldstein and Associates prepared a study for US Wildlife Service of the ichthyoplanckton sampling at Moratoc Park in Williamston NC The preliminary results are attached as Attachment B The general finding is that the proposed intake location 50 feet from the right bank (outer bend) and 1 to 2 meters below the surface is outside the area where drifting larvae of shad river herring striped bass or white perch are most concentrated Carp and minnows are the only species that exhibit a slightly increased concentration in this area but they are also abundant elsewhere in the channel While an intake location along the inner bend (left bank) might impinge or entrain fewer fish larvae the proposed location and withdrawal volume (less than 0 05 percent of typical Apr May river flow) is unlikely to cause significant mortality to fish larvae All work within the Roanoke River associated with the water intake will be completed outside of the construction moratorium of February 15 to September 30 Cultural Resources Martin County has 25 nationally registered historic places as listed by the National Register Information System provided by the National Park Service National Register of Historic Places on April 14 2009 available at http / /www nr nps ov/ None of them are to be impacted by this project MITIGATION The surface water intake will be designed with screens having maximum openings of 10 millimeter and entrance velocities not to exceed 025 feet per second Additionally the intake will be designed with an air purge system to loosen any debris that may happen to become lodged in the screen These design parameters will protect the aquatic species and habitats in the project vicinity The surface water intake will be installed in the optimal location identified by the larval study Construction impacts to the Moratoc Park will be temporary Any areas disturbed during construction will be returned to pre construction contours following construction The raw water pump station will be constructed outside the 100 year floodplam and all equipment will be protected by elevating it above the 500 year floodplam The project as proposed has fewer floodplam impacts than what was originally proposed Additionally the portions of the project within the floodplam will be constructed in accordance with Martin County s flood plain ordinance and will be protected by flood insurance Navigation and recreational use of the Roanoke River will be maintained The raw water pump station will be located outside of existing wetlands as delineated The engineer s wetland delineation has been confirmed with the US Army Corps of Engineers The pump station is not in conflict with the wetland The project will be constructed in accordance with the Army Corps of Engineers and DWQ conditions for Nationwide Permit 18 and GC 3821 An Erosion and Sediment Control Plan will be established to protect the Roanoke River from silt and to protect the protect site from the loss of sediment as a result of the construction activities Additionally the Roanoke River will be reclassified as a water supply watershed through application to the DWQ which will protect the Roanoke River as a water supply source The majority of the project is located in Martin County and avoids coastal resources however the portion of the project which is in Bertie County a coastal county, has been determined to be consistent with Bertie County s CAMA Land Use Plan A CAMA Mayor permit will be required for this project WETLAND DETERMINATION DATA FORM — Atlantic and Gulf Coastal Plain Region k tV/ if Project/Site MCRKIAY & JZ&W UfALC,% City /County W 1 Sampling pate ` Qpphcant/Owner State r ) �� _/y C Sampling Point. I'vestigator(s) V4, **.ne Section Township Range Landform (hillslope terrace etc) 04 Oft tS,,N Local relief (concave convex none) K V Slope (°/) U Z Subregion (LRR or MLRA) d Lat Ise '�l -11'lA Long Tjb46 la it w Datum WC. , Sol] Map Unit Name NWI classification Are climatic / hydrologic conditions on the site typical for this time of year? Yes t/ / No (If no explain in Remarks ) Are Vegetation M Sod n% or Hydrology _,%/ significantly disturbed? Are Normal Circumstances present? Yes No Are Vegetation A/ Sod _ +✓, or Hydrology Al naturally problematic? (If needed explain any answers in Remarks } SUMMARY OF FINDINGS — Attach site map showing sampling point locations transects imoortant features etc Hydrophytic Vegetation Present? Yes No Is the Sampled Area Hydnc Soil Present? Yes No Wetland Hydrology Present? Yes No within a Wetland? Yes No Remarks MYURULUUY Wetland Hydrology Indicators Secondary Indicators (minimum of two reouired) Primary Indicators mtmmum of one is required, check all that apply) _ Surface Soil Cracks (B6) _ Surface Water (Al) ligh Water Table (A2) _ Water - Stained Leaves (69) Sparsely Vegetated Concave Surface (B8) C_,_/ /C _ Aquatic Fauna (813) _ Drainage Patterns (B10) /Saturation (A3) _ Mari Deposits (B15) (LRR U) _ Moss Trim Lines (816) __.. Water Marks (Bi) _ Hydrogen Sulfide Odor (Cl) _ _ Dry Season Water Table (C2) — Sediment Deposits (82) _ Oxidized Rhizospheres on Living Roots (C3) _ Crayfish Burrows (C8) Drift Deposits (63) –,_„ Presence of Reduced Iron (C4) _ Saturation Visible on Aerial Imagery (C9) _ Algal Mat or Crust (B4) , Recent Iron Reduction in Tilled Soils (C6) — Geomorphic Position (D2) — Iron Deposits (135) _ Thin Muck Surface (C7) _ Shallow Agwtard (D3) Inundation Visible on Aerial Imagery (137) _ Other (Explain in Remarks) _ FAC Neutral Test (D5) Field Observations Surface Water Present? Yes - ---V���/ - No Depth (inches) t Water Table Present? Yes No Depth (inches) Saturation Present? Yes No Includes capillary fringe) Depth (inches) Wetland Hydrology Present? Yes V No Describe Recorded Data (stream gauge monitoring well aerial photos previous inspections) if available Remarks US Army Corps of Engineers Atlantic and Gulf Coastal Plain Region – Interim Version VEGETATION — Use scientific names of plants r Tree Stratum (Plot size �6 '` ) Absolute Dominant Indicator over Species? Status 1 Lj hatat crmct, iCAJNA 4n 3 d x2= _6_ 4 (A/B) 5 x4= !� 6 _ X5= r� 7 (A) q (B) Sapling Stratum (Plot size ©t ) - Tjot�al Cover 1 N &LIA M,# IM 2 0 M14 u, l` A a�nr�y _rkka z,� �P,� *f A u 0- t(- AgLli* 4 5 6 7 Shrub Stratum (Plot size 4- ) —�_ ° Total Cover 2 3 4 5 6 )7 He�Stratum �t�_ = Total Cover (Plot s¢e ) N CkS01 �A�tA� �t A 2 3 4 5 6 7 8 9 10 11 12 Woody Vine tr um (Plot size � ) Total Cover 3 ��T wt�i'Li 4 5 Total Cover (If � +1 Sampling Point Dominance Test worksheet Number of Dominant Species That Are OBL FACW or FAC ^� (A) Total Number of Dominant Species Across All Strata Total / Cover of Multiply by OBL species (B) Percent of Dominant Species d x2= _6_ That Are OBL FACW or FAC (A/B) Prevalence Index worksheet Total / Cover of Multiply by OBL species U' x 1 = C) FACW species d x2= _6_ FAC species � x 3 = � !� FACU species x4= !� UPL species _ X5= r� Column Totals (A) q (B) Prevalence Index B/A = :_ .Dominance Test is >50 / V Prevalence Index is 53 0' _ Problematic Hydrophytic Vegetation' (Explain) 'Indicators of hydnc soil and wetland hydrology must be present unless disturbed or problematic Strata Tree - Woody plants excluding woody vines approximately 20 ft (6 m) or more In height and 3 in (7 6 cm) or larger in diameter at breast height (DBH) Sapling - Woody plants excluding woody vines approximately 20 ft (6 m) or more in height and less than 3 in (7 6 cm) DBH Shrub - Woody plants excluding woody vines approximately 3 to 20 ft (1 to 6 m) in height Herb - All herbaceous (non woody) plants including herbaceous vines regardless of size Includes woody plants except woody vines less than approximately 3 It (1 m) in height. Woody vine - All woody vines regardless of height Hydrophytic Vegetation Present? Yes No US Army Corps of Engineers Atlantic and Gulf Coastal Plain Region - Interim Version SOIL on (Descri to or confirm the absence it ,{ Sampling Point Depth Matrix Redox Features (inches{ Color (moist) /o Color (moist) / Type' Loc Texture Remarks j. ncentration D= Depletion RM= Reduced Matrix CS Hydric Soil Indicators s location PL =Pore Lmin I Indicators for Problematic Hydric — Histosol (Al) _ Polyvalue Below Surface (S8) (LRR S T U) _ 1 cm Muck (A9) (LRR O) _ Histic Epipedon (A2) — Thin Dark Surface (S9) (LRR S T U) _ 2 cm Muck (A10) (LRR S) _ Black Histic (A3) _ Loamy Mucky Mineral (F1) (LRR O) — Reduced Vertic (F18) (outside MLRA 150A B) _ Hydrogen Sulfide (A4) — Loamy Gleyed Matrix (172) — Piedmont Floodplam Soils (F19) (LRR P S T) _ Stratified Layers (A5) _ Depleted Matrix (173) _ Anomalous Bright Loamy Sods (F20) _, Organic Bodies (A6) (LRR P T U) — Redox Dark Surface (F6) (MLRA 153B) _ 5 cm Mucky Mineral (A7) (LRR P T U) _ Depleted Dark Surface (F7) _ Red Parent Material (TF2) _ Muck Presence (A8) (LRR U) _ Redox Depressions (F8) _ Very Shallow Dark Surface (TF12) (LRR T U) _ 1 cm Muck (A9) (LRR P T) _, Matt (F10) (LRR U) _ Other (Explain in Remarks) Depleted Below Dark Surface (A11) _ Depleted Ochnc (F11) (MLRA 151) _ Thick Dark Surface (Al2) — Iron Manganese Masses (F12) (LRR O P T) 3Indicators of hydrophytic vegetation and _ Coast Prairie Redox (A16) (MLRA 150A) _ Umbric Surface (F13) (LRR P T U) wetland hydrology must be present -,,Sandy Mucky Mineral (81) (LRR O S) _ Delta Ochnc (F17) (MLRA 151) unless disturbed or problematic V Sandy Gleyed Matrix (S4) _ Reduced Vertic (F18) (MLRA 150A 1508) Sandy Redox (S5) _ Piedmont Floodplain Soils (F19) (MLRA 149A) Stripped Matrix (S6) Anomalous Bright Loamy Soils (F20) (MLRA 149A 153C 153D) a Dark Surface (S7) (LRR P S T U) Type Depth (Inches) Hydric Soil Present? Yes V No US Army Corps of Engineers Atlantic and Gulf Coastal Plain Region - Interim Version PRELIMINARY JURISDICTIONAL DETERMINATION FORM BACKGROUND INFORMATION A REPORT COMPLETION DATE FOR PRELIMINARY JURISDICTIONAL DETERMINATION (JD) 02/07/2012 B NAME AND ADDRESS OF PERSON REQUESTING PRELIMINARY JD Crystal Penton for the Wooten Company 120 North Boylan Avenue Raleigh North Carolina 27603 C DISTRICT OFFICE, FILE NAME, AND NUMBER CESAW -RG -W SAW 2012 00227 D PROJECT LOCATION(S) AND BACKGROUND INFORMATION Project area is located adjacent to the Roanoke River and Moratoc Park just north of the Highway 17113 N bridge off of River Drive in Williamston Martin County North Carolina (IF NECESSARY, USE THE ATTACHED TABLE TO DOCUMENT MULTIPLE WATERBODIES AT DIFFERENT SITES) 1 State NC County Martin City Williamston 2 Center coordinates of site (lat/long in degree decimal format) Lat 35 8612 / Long -77 0456 3 Name of neatest waterbody Roanoke River 4 Identify (estimate) amount of waters in the review area a Non wetland waters linear feet 0 in immediate project area reviewed on Sept 13 2011 and/or acres t) Cowardin Class(es) rr) Stream Flow N/A b Wetlands 3+ estimated surrounding project area but not within placement area acres r) Cowardtn Class(es) 7 Name of onstte water bodies identified as Section 10 waters not part of this portion of the project Roanoke River is part of the other intake permit from CAMA ❑ Tidal ® Non Tidal E REVIEW PERFORMED FOR SITE EVALUATION (CHECK ALL THAT APPLY) ❑ Office (Desk) Deterrnmation / Date ® Field Determination / Date(s) September 13 2011 I Z he Corps of Engineers believes that there maybe Jurisdictional waters of the United States on the subject site and the permit applicant or other affected party who requested this preliminary JD is hereby advised of his or her option to request and obtain an approved jurisdictional determination (JD) for that site Nevertheless the permit applicant or other person who requested this preliminary JD has declined to exercise the option to obtain an approved JD in this instance and at this time 2 In any circumstance where a permit applicant obtains an individual permit or a Nationwide General Permit (NWP) or other general permit verification requiring pre construction notification' (PCN) or requests verification for a non reporting NWP of other general permit and the permit applicant has not requested an approved JD for the activity the permit applicant is hereby made aware of the following (1) the permit applicant has elected to seek a permit authorization based on a preliminary JD which does not make an official determination of jurisdictional waters (2) that the applicant has the option to request an approved JD before accepting the terms and conditions of the permit authorization and that basing a permit authorization on an approved JD could possibly result in less compensatory mitigation being required or different special conditions (3) that the applicant has the right to request an individual permit rather than accepting the terms and conditions of the NWP or other general permit authorization, (4) that the applicant can accept a permit authorization and thereby agree to comply with all the terms and conditions of that permit including whatever nutigation requirements the Corps has determined to be necessary, (5) that undertaking any activity in reliance upon the subject permit authorization without requesting an approved JD constitutes the applicant's acceptance of the use of the preliminary JD but that either form of JD will be processed as soon as is practicable (6) accepting a permit authorization (e g signing a proffered individual permit) or undertaking any activity in reliance on any form of Corps permit authorization based on a preliminary JD constitutes agreement that all wetlands and other water bodies on the site affected in any way by that activity are jurisdictional waters of the United States, and precludes any challenge to such jurisdiction in any administrative or judicial compliance or enforcement action or in any administrative appeal or in any Federal court, and (7) whether the applicant elects to use either an approved JD or a preliminary JD that JD will be processed as soon as is practicable Further, an approved ID a proffered individual permit (and all terms and conditions contained therein), or individual permit denial can be administratively appealed pursuant to 33 C F R Part 331, and that in any administrative appeal, jurisdictional issues can be raised (see 33 C F R 331 5(a)(2)) If during that administrative appeal it becomes necessary to make an official determination whether CWA Jurisdiction exists over a site or to provide an official delineation of Jurisdictional waters on the site the Corps will provide an approved JD to accomplish that result as soon as is practicable This preliminary JD finds that there may be waters of the United States on the subject project site and identifies all aquatic features on the site that could be affected by the proposed activity based on the following information Based on the hydric soils hydrological indicators and hyrophytic vegetation found during the September 13 2011 site visit with Mark Hussey in the original proposed placement of the pump station it was shifted to the west to avoid all wetland impacts thts-At ®acde of the proiect Placement at the mapped location will not take a permit from the Corps (See map in file) There are wetlands near the project area and any deviation from the approved site impacts should be discussed with the Corps prior to beginning work to ensure no wetlands are present F SUPPORTING DATA Data reviewed for preliminary JD (check all that apply checked items should be included in case file and where checked and requested, appropriately reference sources below) ® Maps, plans, plots or plat submitted by or on behalf of the applicant/consultant The Wooten Company ❑ Data sheets prepared/submrtted by or on behalf of the applicant/consultant ❑ Office concurs with data sheets /delineation report ❑ Office does not concur with data sheets /delineation report ® Data sheets prepared by the Corps See field notes for preliminary determination ❑ Corps navigable waters study ❑ U S Geological Survey Hydrologic Atlas ❑ USGS NHD data ❑ USGS 8 and 12 digit HUC maps ® U S Geological Survey map(s) Cite scale & quad name Williamston ® USDA Natural Resources Conservation Service Soil Survey ❑ National wetlands inventory map(s) Cite name ❑ State /Local wetland inventory map(s) ❑ FEMA/FIRM maps ❑ 100 year Floodplam Elevation is (National Geodectrc Vertical Datum of 1929) ❑ Photographs ❑ Aenal (Name & Date) or ❑ Other (Name & Date) ❑ Previous determination(s) File no and date of response letter ❑ Other information (please specify) IMPORTANT NOTE The information recorded on this form has not necessarily been verified -by the Coins and should not be i elied upon for later iunsdictional determinations Sr ature d Date Person requesting preliminary JD (REQUIRED unless obtaining the signature is impracticable) W A TF9OG 0 >_ y O < 20120736 `O��F Office Use Only Corps action ID no DWQ project no Form Version 1 3 Dec 10 2008 Page 1 of 12 PCN Form — Version 1 3 December 10 2008 Version Pre - Construction Notification PC Form A Applicant Information 1 Processing 1 a Type(s) of approval sought from the Corps ❑ Section 404 Permit ®Section 10 Permit 1 b Specify Nationwide Permit (NWP) number NWP12 or General Permit (GP) number 1 c Has the NWP or GP number been verified by the Corps? ❑ Yes ® No 1 d Type(s) of approval sought from the DWQ (check all that apply) ® 401 Water Quality Certification — Regular ® Non 404 Jurisdictional General Permit ❑ 401 Water Quality Certification — Express ❑ Riparian Buffer Authorization 1 e Is this notification solely for the record because written approval is not required? For the record only for DWQ 401 Certification ❑ Yes ® No For the record only for Corps Permit ❑ Yes ® No 1f Is payment into a mitigation bank or in lieu fee program proposed for mitigation of impacts? If so attach the acceptance letter from mitigation bank or in lieu fee program El Yes ®No 1g Is the project located in any of NC s twenty coastal counties If yes answer 1 h below ® Yes ❑ No 1h Is the project located within a NC DCM Area of Environmental Concern (AEC)? ® Yes ❑ No 2 Project Information 2a Name of project MCRWASA WATER TREATMENT PLANT AND WATER TRANSMISSION SYSTEM 2b County MARTIN /BERTIE 2c Nearest municipality / town WILLIAMSTON NC 2d Subdivision name N/A 2e NCDOT only T I P or state project no N/A 3 Owner Information 3a Name(s) on Recorded Deed MARTIN COUNTY REGIONAL WATER AND SEWER AUTHORITY 3b Deed Book and Page No DEED BK X 8 PAGE 712 3c Responsrble Party (for LLC if DON CHRISTOPHER p (applicable) 3d Street address 305 EAST MAIN ST 3e City state zip WILLIAMSTON NC 27892 2566 UG 3f Telephone no 252 789 4300 252 789 4309 8 WWeUands gQQUALI'ry 3g Fax no 3h Email address DWC_WMSTN @YAHOO COM Page 1 of 12 PCN Form — Version 1 3 December 10 2008 Version 4 Applicant Information (if different from owner) 4a Applicant is ❑ Agent ❑ Other specify 4b Name 4c Business name (if applicable) 4d Street address 4e City state zip 4f Telephone no 4g Fax no 4h Email address 5 Agent/Consultant Information (if applicable) 5a Name CHARLES W DAVIS 5b Business name (if applicable) THE WOOTEN COMPANY 5c Street address 120 N BOYLAN AVE 5d City state zip RALEIGH NC 27603 5e Telephone no 919 828 0531 5f Fax no 919 834 3589 5g Email address CDAVIS @THEWOOTENCOMPANY COM Page 2 of 12 PCN Form — Version 1 3 December 10 2008 Version B Project Information and Prior Project History 1 Property Identification 1a Property identification no (tax PIN or parcel ID) 0503979 lb Site coordinates (in decimal degrees) Latitude 35 862 Longitude 77 045 (DD DDDDDD) ( DD DDDDDD) 1c Property size 77 66 acres 2 Surface Waters 2a Name of nearest body of water (stream river etc ) to proposed project ROANOKE RIVER 2b Water Quality Classification of nearest receiving water PRESENTLY C RECLASSIFYING TO WS 4 & WS4 CA 2c River basin ROANOKE Page 3 of 12 PCN Form — Version 1 3 December 10 2008 Version 3 Project Description 3a Describe the existing conditions on the site and the general land use in the vicinity of the project at the time of this application RAW WATER INTAKE SITE IS CURRENTLY PUBLIC PARK WITH EXISTING HISTORIC BUILDINGS HISTORIC WHARF RIPRAPPED SHORELINE PLAYGROUND WITH BATHHOUSE UNDER CONSTRUCTION BY OTHERS THE WATER TREATMENT SITE IS CURRENTLY AGRICULTURAL FIELDS 3b List the total estimated acreage of all existing wetlands on the property 0 349 ACRES 3c List the total estimated linear feet of all existing streams (intermittent and perennial) on the property N/A 3d Explain the purpose of the proposed project The project will provide MCRWASA with a surface water treatment plant for the treatment of water from the Roanoke River This WTP will provide MCRWASA s member entities with high quality potable water supplies and will allow MCRWASA to comply with the CCPCUA rules by reducing their ground water withdrawals for drinking water purposes 3e Describe the overall project in detail including the type of equipment to be used The proposed project will provide a new water supply source to MCRWASA who supplies water to the Town of Wdliamston and Martin County Water and Sewer Districts 1 and 2 The project includes the construction of a 2 0 MGD surface water treatment plant which shall utilize a run of river water intake from the southern bank of Roanoke River The intake shall be designed to protect the integrity of aquatic species and their habitat in the area The surface water intake shall be a 36 inch diameter tee screen anchored by a concrete slab The tee screen will have mesh or slot openings of 1 0 mm or less The screen has been sized such that the entrance velocities do not exceed 0 25 fps Additionally the screen will have an air backwash system that shall use compressed air to clean the screen These design parameters shall protect the integrity of aquatic species and their habitats in the vicinity of the surface water intake The intake is to be located on property owned by Martin County at Morotoc Park The intake structure shall be constructed in the Roanoke River using a sheet pile cofferdam In addition to the intake structure a fender will be constructed to protect the intake structure from debris and flotsam that may be floating down river The fender shall be constructed of 20 foot piles and 4 x 12 timbers anchored across the piles with a 1 foot spacing Class I rip rap shall be placed around the base of the fender and the intake structure to protect the riverbed against scour Water withdrawn through the intake will flow by gravity through a 20 inch pipe to a pump station located away from the river outside the 100 year floodplain at Morotoc Park in Williamston A 4 inch compressed air line will be installed with the raw water line using straps and saddles This line will supply the air backwash system with compressed air The raw water pump station shall use a vertical turbine pump to pump water southwest along River Drive and shall continue along the alignment to the water treatment plant To protect the pumps and electrical equipment from damage due to future flood events the pump station shall be constructed above the 500 year flood elevation (19 feet above mean sea level) The new structure will occupy approximately 2 600 cubic feet of the 500 year floodplain The impact on the available flood capacity and function is expected to be undetectable In addition to the raw water impact site the proposed 2 0 MGD water treatment plant is to be constructed within the Town of Wdliamston on a site that is currently used as agricultural lands The WTP site will include a Raw water reservoir clarifier the main building containing the filters chemical feed building chlorine contact chamber clearwell backwash/waste basin gravity thickener and elevated tank The construction at the WTP site shall not impact any streams or wetlands In addition the project includes the construction of approximately 4650 If of 18 raw water line 6420 If of 18 and 13465 If of 12 finished water line Any stream or wetland crossings by these transmission lines will be horizontally directionally drilled to minimize impacts 4 Jurisdictional Determinations 4a Have jurisdictional wetland or stream determinations by the Corps or State been requested or obtained for this property / project (including all prior phases) in the past? ® Yes ❑ No ❑ Unknown Comments 4b If the Corps made the jurisdictional determination what type ❑ Preliminary ® Final of determination was made? 4c If yes who delineated the jurisdictional areas? Agency /Consultant Company USACE Name (if known) EMILY JERNIGAN Other It If yes list the dates of the Corps jurisdictional determinations or State determinations and attach documentation 2/7/2012 Page 4 of 12 PCN Form — Version 1 3 December 10 2008 Version 6 Project History 5a Have permits or certifications been requested or obtained for this project (including all prior phases) in the past El ®No ❑Unknown 5b If yes explain in detail according to help file instructions 6 Future Project Plans 6a Is this a phased project? ❑ Yes ® No 6b If yes explain Page 5 of 12 PCN Form — Version 1 3 December 10 2008 Version C Proposed Impacts Inventory 1 Impacts Summary la Which sections were completed below for your project (check all that apply) ® Wetlands ❑ Streams tributaries ❑ Buffers ® Open Waters ❑ Pond Construction 2 Wetland Impacts If there are wetland impacts proposed on the site then complete this question for each wetland area impacted 2a 2b 2c 2d 2e 2f Wetland impact Type of jurisdiction number — Type of impact Type of wetland Forested (Corps 404 10 Area of impact Permanent (P) or (if known) DWQ —non 404 other) (acres) Temporary T W1 []PET TEMP ❑ Yes ® Corps 0 006 EASEMENT ® No ❑ DWQ W2 ❑ P ❑ T ❑ Yes ❑ Corps ❑ No ❑ DWQ W3 ❑ P ❑ T ❑ Yes ❑ Corps ❑ No ❑ DWQ W4 ❑ P ❑ T ❑ Yes ❑ Corps ❑ No ❑ DWQ W5 ❑ P ❑ T ❑ Yes ❑ Corps ❑ No ❑ DWQ W6 ❑ P ❑ T ❑ Yes ❑ Corps ❑ No ❑ DWQ 2g Total wetland impacts 0 006 2h Comments POTENTIAL IMPACT FROM CONSTRUCTION EQUIPMENT 3 Stream Impacts If there are perennial or intermittent stream impacts (including temporary impacts) proposed on the site then complete this question for all stream sites impacted 3a 3b 3c 3d 3e 3f 3g Stream impact Type of impact Stream name Perennial Type of jurisdiction Average Impact number (PER) or (Corps 404 10 stream length Permanent (P) or intermittent DWQ — non 404 width (linear Temporary (T) (INT) other) (feet) feet) S1 ❑ P ®T DIRECTIONAL SWEETWATER ® PER ❑ Corps 180 0 DRILL CREEK ❑ INT ® DWQ S2 ❑ P ❑ T ❑ PER ❑ Corps ❑ INT ❑ DWQ S3 ❑ P ❑ T ❑ PER ❑ Corps [:11 NT ❑ DWQ S4 ❑ P ❑ T ❑ PER ❑ Corps ❑ INT ❑ DWQ S5 ❑ P ❑ T ❑ PER ❑ Corps [:11 NT ❑ DWQ S6 ❑ P ❑ T ❑ PER ❑ Corps ❑ INT ❑DWQ 3h Total stream and tributary impacts 0 31 Comments NO STREAM IMPACT DUE TO DIRECTIONAL DRILL Page 6 of 12 PCN Form — Version 1 3 December 10 2008 Version 4 Open Water Impacts If there are proposed impacts to lakes ponds estuaries tributaries sounds the Atlantic Ocean or any other open water of the U S then individually list all open water impacts below 4a 4b 4c 4d 4e Open water Name of waterbody impact number — (if applicable) Type of impact Waterbody type Area of impact (acres) Permanent (P) or Temporary T RAW WATER INTAKE 01 ❑ PET ROANOKE RIVER EXCAVATION & RIVER 003 STABILIZATION 02 ❑P ❑T 03 ❑P ❑T 04 ❑P ❑T 4f Total open water impacts 003 4g Comments 5 Pond or Lake Construction If pond or lake construction proposed then complete the chart below 5a 5b 5c 5d 5e Wetland Impacts (acres) Stream Impacts (feet) Upland Pond ID Proposed use or purpose (acres) number of pond Flooded Filled Excavated Flooded Filled Excavated Flooded P1 P2 51' Total 5g Comments 5h Is a dam high hazard permit required ❑ Yes ❑ No If yes permit ID no 51 Expected pond surface area (acres) 5j Size of pond watershed (acres) 5k Method of construction Page 7 of 12 PCN Form — Version 1 3 December 10 2008 Version 6 Buffer Impacts (for DWQ) If project will impact a protected riparian buffer then complete the chart below If yes then individually list all buffer impacts below If any impacts require mitigation then you MUST fill out Section D of this form 6a ❑ Neuse ❑ Tar Pamlico ❑ Other Project is in which protected basin? ❑ Catawba ❑ Randleman 6b 6d 6e 6f 6g Buffer impact number — LReason Buffer Zone 1 impact Zone 2 impact Permanent (P) or Stream name mitigation (square feet) (square feet) Temporary T required? 61 ❑P ❑T El Yes ❑ No B2 ❑ P ❑ T ❑ Yes ❑ No B3 ❑P ❑T El Yes ❑ No 6h Total buffer impacts 61 Comments D Impact Justification and Mitigation 1 Avoidance and Minimization 1a Specifically describe measures taken to avoid or minimize the proposed impacts in designing project The surface water intake will be designed with screens having maximum openings of 1 0 millimeter and entrance velocities not to exceed 0 25 feet per second Additionally the intake will be designed with an air purge system to loosen any debris that may happen to become lodged in the screen These design parameters will protect the aquatic species and habitats in the project vicinity The surface water intake will be installed in the optimal location identified by the larval study completed by USFWS Construction impacts to the Moratoc Park will be temporary Any areas disturbed during construction will be returned to pre construction contours following construction The raw water pump station will be constructed outside the 100 year floodplain and all equipment will be protected by elevating it above the 500 year floodplain Additionally the portions of the project within the floodplain will be constructed in accordance with Martin County s flood plain ordinance and will be protected by flood insurance Navigation and recreational use of the Roanoke River will be maintained The raw water pump station will be located outside of existing wetlands as delineated The engineers wetland delineation has been confirmed with the US Corps of Engineers to confirm the pump station is not in conflict with the wetland The raw and finished water lines were designed to minimize impact by directional drilling under Sweetwater Creek and avoiding wetlands and water bodies in the design 1 b Specifically describe measures taken to avoid or minimize the proposed impacts through construction techniques Directional drill 2 Compensatory Mitigation for Impacts to Waters of the U S or Waters of the State 2a Does the project require Compensatory Mitigation for ® Yes ❑ No impacts to Waters of the U S or Waters of the State? 2b If yes mitigation is required by (check all that apply) ❑ DWQ ® Corps ❑ Mitigation bank 2c If yes which mitigation option will be used for this ❑ payment to in lieu fee program project? ® Permittee Responsible Mitigation Page 8 of 12 PCN Form — Version 1 3 December 10 2008 Version 3 Complete if Using a Mitigation Bank 3a Name of Mitigation Bank 3b Credits Purchased (attach receipt and letter) Type Quantity 3c Comments 4 Complete if Making a Payment to In lieu Fee Program 4a Approval letter from in lieu fee program is attached ❑ Yes 4b Stream mitigation requested linear feet 4c If using stream mitigation stream temperature ❑ warm ❑ cool ❑cold 4d Buffer mitigation requested (DWQ only) square feet 4e Riparian wetland mitigation requested acres 4f Non riparian wetland mitigation requested acres 4g Coastal (tidal) wetland mitigation requested acres 4h Comments 6 Complete if Using a Permittee Responsible Mitigation Plan 5a If using a permittee responsible mitigation plan provide a description of the proposed mitigation plan See attached mitigation plan 6 Buffer Mitigation (State Regulated Riparian Buffer Rules) — required by DWQ 6a Will the project result in an impact within a protected riparian buffer that requires buffer mitigation? ❑ Yes ® No 6b If yes then identify the square feet of impact to each zone of the riparian buffer that requires mitigation Calculate the amount of mitigation required Zone 6c Reason for impact 6d Total impact (square feet) Multiplier 6e Required mitigation (square feet) Zone 1 3 (2 for Catawba) Zone 2 1 5 6f Total buffer mitigation required 6g If buffer mitigation is required discuss what type of mitigation is proposed (e g payment to private mitigation bank permittee responsible riparian buffer restoration payment into an approved in lieu fee fund) 6h Comments Page 9 of 12 PCN Form — Version 1 3 December 10 2008 Version E Stormwater Management and Diffuse Flow Plan (required by DWQ) 1 Diffuse Flow Plan 1a Does the project include or is it adjacent to protected riparian buffers identified ❑ Yes ® No within one of the NC Riparian Buffer Protection Rules? 1 b If yes then is a diffuse flow plan included? If no explain why ❑ Yes El No Comments 2 Stormwater Management Plan 2a What is the overall percent imperviousness of this project? 008% 2b Does this project require a Stormwater Management Plan? ❑ Yes ® No 2c If this project DOES NOT require a Stormwater Management Plan explain why Low Density 2d If this project DOES require a Stormwater Management Plan then provide a brief narrative description of the plan ❑ Certified Local Government 2e Who will be responsible for the review of the Stormwater Management Plan? ❑ DWQ Stormwater Program ❑ DWQ 401 Unit 3 Certified Local Government Stormwater Review 3a In which local government s jurisdiction is this project? N/A ❑ Phase II 3b Which of the following locally implemented stormwater management programs ❑ NSW ❑ USMP apply (check all that apply) ❑ Water Supply Watershed ❑ Other 3c Has the approved Stormwater Management Plan with proof of approval been ❑ Yes ® No attached? 4 DWQ Stormwater Program Review ❑ Coastal counties 4a Which of the following state implemented stormwater management programs apply El HQW El ORW (check all that apply) ❑ Session Law 2006 246 ❑ Other 4b Has the approved Stormwater Management Plan with proof of approval been attached? ❑ Yes ® No 5 DWQ 401 Unit Stormwater Review 5a Does the Stormwater Management Plan meet the appropriate requirements? ❑ Yes ® No 5b Have all of the 401 Unit submittal requirements been met? ❑ Yes ® No Page 10 of 12 PCN Form — Version 1 3 December 10 2008 Version F Supplementary Information 1 Environmental Documentation (DWQ Requirement) la Does the project involve an expenditure of public (federal /state /local) funds or the ® Yes ❑ No use of public (federal /state) land? lb If you answered yes to the above does the project require preparation of an environmental document pursuant to the requirements of the National or State ® Yes ❑ No (North Carolina) Environmental Policy Act (NEPA/SEPA)? 1c If you answered yes to the above has the document review been finalized by the State Clearing House? (If so attach a copy of the NEPA or SEPA final approval letter ) ® Yes ❑ No Comments There has been an finding of no significant impact 2 Violations (DWQ Requirement) 2a Is the site in violation of DWQ Wetland Rules (15A NCAC 2H 0500) Isolated Wetland Rules (15A NCAC 2H 1300) DWQ Surface Water or Wetland Standards ❑ Yes ® No or Riparian Buffer Rules (15A NCAC 2B 0200)? 2b Is this an after the fact permit application? ❑ Yes ® No 2c If you answered yes to one or both of the above questions provide an explanation of the violation(s) 3 Cumulative Impacts (DWQ Requirement) 3a Will this project (based on past and reasonably anticipated future impacts) result in ❑ Yes ® No additional development which could impact nearby downstream water quality 3b If you answered yes to the above submit a qualitative or quantitative cumulative impact analysis in accordance with the most recent DWQ policy If you answered no provide a short narrative description 4 Sewage Disposal (DWQ Requirement) 4a Clearly detail the ultimate treatment methods and disposition (non discharge or discharge) of wastewater generated from the proposed project or available capacity of the subject facility Sewer to Williamston Wastewater Treatment Plant Page 11 of 12 PCN Form — Version 1 3 December 10 2008 Version 5 Endangered Species and Designated Critical Habitat (Corps Requirement) 5a Will this project occur in or near an area with federally protected species or ® Yes ❑ No habitat? 5b Have you checked with the USFWS concerning Endangered Species Act ® Yes ❑ No impacts? 5c If yes indicate the USFWS Field Office you have contacted ® Raleigh ❑ Asheville 5d What data sources did you use to determine whether your site would impact Endangered Species or Designated Critical Habitat? Data from Robert Goldstein and Associates and from USFWS 6 Essential Fish Habitat (Corps Requirement) 6a Will this project occur in or near an area designated as essential fish habitatT ® Yes ❑ No 6b What data sources did you use to determine whether your site would impact Essential Fish Habitat? USFWS resources 7 Historic or Prehistoric Cultural Resources (Corps Requirement) 7a Will this project occur in or near an area that the state federal or tribal governments have designated as having historic or cultural preservation ❑ Yes ® No status (e g National Historic Trust designation or properties significant in North Carolina history and archaeology)? 7b What data sources did you use to determine whether your site would impact historic or archeological resources? EA & Phase I Archaelogical Survey (attached) 8 Flood Zone Designation (Corps Requirement) 8a Will this project occur in a FEMA designated 100 year floodplain? —7-0 yes ❑ No 8b If yes explain how project meets FEMA requirements Raw water pump station is to be above the 500 year flood plain elevation Flood insurance will be obtained for all structures in flood plain 8c What source(s) did you use to make the floodplain determination? FIRM maps Donald Christopher Applicant/Agent s Printed Name Date Applicant/Age s Slgnatur (Agents signature is valid only if an authorization I r from the applicant is rowded ) Page 12 of 12 PCN Form — Version 1 3 December 10 2008 Version